Plane Stupid’s campaign, developed by the ad agency Mother, aims to show the impact that global warming is having on polar ice caps.The group is aiming to point out that even short flights to the continent have a major impact on carbon emissions. Plane Stupid said that the ad was inspired by the fact that an average European flight produces 400kg of carbon, which it claims is the same weight as an average female polar bear.”We wanted to confront people with the impact that short-haul flights have on the climate,” said Robert Saville, a director at Mother. “We used polar bears because they are a well understood symbol of the effect that climate change is having on the natural world.”